Lower the video resolution
Reduce the frame rate
Use a more efficient codec like H.265/HEVC or AV1
Lower the bitrate
Trim unnecessary footage
Remove extra audio tracks
Compress the audio
Convert to a smaller file format
Shorten the video length
Use variable bitrate instead of constant bitrate
Re-encode with a smaller preset
Crop out unused portions of the frame
Reduce color depth if possible
Remove subtitles or metadata
Use a video compression tool or editor